We know how to sequester carbon dioxide during this process.
As well as destroying such native ecosystems, deforestation also diminishes so-called "carbon sinks" -- thereby reducing the Earth's capacity to absorb and re-process atmospheric carbon dioxide -- while also adding to air pollution through the burning of land to clear it for cultivation (sugarcane fields are traditionally fired prior to harvest to remove leaves and drive away snakes).
Most plants use an enzyme called rubisco to convert carbon dioxide (CO2) into sugars containing three carbon atoms a process known as C3 photosynthesis.
At the moment it comes from natural gas, oil or coal, in a process that spits out carbon dioxide.
Yes, open pit bitumen mining blights the landscape, the process releases too much carbon dioxide, and tailing ponds occasionally kill ducks.
During photosynthesis -- the process when the plant absorbs carbon dioxide and gives off oxygen -- organic tissue absorbs airborne toxins.
So although the cars are technically zero emission, the process of making the hydrogen produces carbon dioxide.
Without photosynthesis, the process by which plants use sunlight to convert carbon dioxide into energy, the trees effectively starve.
BBC: NEWS | Science/Nature | Climate threat has plants quivering
However, cremation can still be a toxic process, as it can still release chemicals such as carbon dioxide and mercury into the atmosphere.
EPA, which ruled -- which ruling set in motion the scientific process to determine whether the public health was threatened by carbon dioxide as a pollutant.
It has developed a method to extract carbon dioxide from industrial emissions and bubble it through seawater to create calcium carbonate, a process that mimics the buildup of coral.
Because it uses organic materials, any carbon dioxide released during the generation of energy is offset by that absorbed during the plant's life, so the process as a whole is broadly balanced, or "carbon neutral".
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